231000310300221 has 24 divisors (see below), whose sum is σ = 416000558810304. Its totient is φ = 120000161194560.

The previous prime is 231000310300171. The next prime is 231000310300297. The reversal of 231000310300221 is 122003013000132.

231000310300221 is a `hidden beast` number, since 2 + 3 + 100 + 0 + 310 + 30 + 0 + 221 = 666.

It is not a de Polignac number, because 231000310300221 - 2⁶ = 231000310300157 is a prime.

It is a super-2 number, since 2×231000310300221² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231000310300194 and 231000310300203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231000310300621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166666889856 + ... + 166666891241.

It is an arithmetic number, because the mean of its divisors is an integer number (17333356617096).

Almost surely, 2^{231000310300221} is an apocalyptic number.

231000310300221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231000310300221 is a deficient number, since it is larger than the sum of its proper divisors (185000248510083).

231000310300221 is a wasteful number, since it uses less digits than its factorization.

231000310300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333333781121 (or 333333781118 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231000310300221 its reverse (122003013000132), we get a palindrome (353003323300353).

The spelling of 231000310300221 in words is "two hundred thirty-one trillion, three hundred ten million, three hundred thousand, two hundred twenty-one".